Cultivator.



No. 800,360. PATENTED SEPT.-26, 1905,

G. E. GONKLIN. OULTIVATOR.

APPLIOATION FILED JUNE 13,1905.

2 SHEETS-SHEET 1.

Inventor.

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' UNITED STATES PATENT oriuon.

GEORGE ERWYN OONKLIN, OF' KANSAS CITY, MISSOURI, ASSIGNOR OF ONE-HALF TO M. H. LOUDON, OF KANSAS CITY, MISSOURI.

CULTIVATOR.

Specification of Letters Patent.

Application filed June 13, 1905. Serial No. 235,063.

useful Cultivator, of which the following is a specification.

This invention relates to cultivators, and especially to that class of cultivators which are adapted to operate upon listed corn and similar crops, the object of the invention being to simplify and improve the construction and operation of this class of devices.

VViththese and other ends in View, which will readily appear as the nature of the invention is better understood, the same cons'ists in the improved construction and novel arrangement and combination of parts,which will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of embodiment of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited,but that various changes and modifications may be made, especially with regard to size, proportion, and exact manner" of assemblage,w1th1n the scopeof the invention and without departing from the spirit or sacrificing the efficiency of the same.

In said drawings, Figure 1 is a top plan view of a cultivator constructed in'accordance with the principles of the invention. Fig. 2 is aside elevation of the same. Fig. 3 is a transverse sectional view taken on the plane indicated by the line 3 3 in Fig. 2. Fig. 4 is a transverse sectional view taken on the plane indicated by the line 4 4 in Fig. 2.

' Corresponding parts inthe several figures are indicated throughout by similar characters of reference.

' The frame of the improved cultivator'is composed of two runners 1-1,which are spaced apart by means of arches 2 and 3, disposed, respectively, near the front and rear ends. Each of the runners 1 is composedof two vertical members 4: 4!,- which are suitably connected and spaced apart,,as .by means of blocks 5 interposed atvarious points in such a manner as to brace the parts and 'to form a stiff and rigid structure, sufficient space being left between the outer and inner members 4 4! to accommodate working parts of the device, as will be presently more fully described. The runners 1 1 support, near their front ends, a cross-bar 6, with which'is connected a yoke 7 for the attachment of-the draft. Two of the spacing-blocks 5 near the front ends of the runners are verticallyperforated to afford bearings for shafts or spindles 8 8, the lower ends of which are bifurcated to afford bearings for caster-wheels 9, whlch are accommodated in recesses 10 in the under sides of the runners near the front ends of the latter.

The upper ends of the spindles .8 8 are provided with cranks 11, connected by a cross-piece 12. A cross-bar 13, supported upon the runners 1 -1,serves as a base upon which is fulcrumed a lever 14:, the

front end of which is pivotally connected with the cross-bar 12, while the rear end constiwith a catch 18, adapted to engage a notched segment-bar 19, which has been shown as supported upon the front arch 2 of the frame.

The lever 14 has a slot 20, engaging the fulcrum-pin 21 to enable it to be properly adjusted for the purpose of oscillating the spindles 8 in their bearings and to guide the machine by properly adjusting the caster wheels.

- Patented Sept. 26, 1905.

Between the members 44 of the runners are guided a pair of verticallymovable slides 22, adjacent to which slots 23 are formed in the outer runner members 4. Downwardly and rearwardly diverging earthengaging blades 24 are secured near the lower ends of the slides 22, said blades extending through the slot-s 23 on either side of the machine. Supported for oscillation in bearings 25 upon the upper sides of the runners is'a rock-shaft 26, having slotted arms 27 that engage lugs or studs 28 upon the slides 22 near the upper ends of the latter.

The rock-shaft 26 has an operating-lever 29, provided with a stop 30, engaging a suitably-supported segment-rack '31, whereby the lever and its related parts may be securely retained at various adjustments By this means it will be seen that the slides carrying the earth-engaging blades tion, Where they will be prevented from engaging the ground, as will be desirable when the machine is to be transported from one place to another.

The rear ends of the runners are considerably reduced in height, this being mainly for the purpose of reducing the weight and rendering the machine more compact, as well as for the purpose of lessening the expense of manufacture. Between the members 4 4, near the rear end of the machine, are journaled a pair of transporting-wheels 32, the treads of which extend below the runner, as will be clearly seen in Fig. 2, so as to support the rear part of the machine.

A rock-shaft33, supported for oscillation in bearings 34 at the upper end of a pair of slides 35, is provided with heads 36, extending beyond the outer side members 4 of the runners and carrying earth-engaging harrowteeth 37. The slides 35 are supported for vertical movement between the runner members 4 4 and spacing-blocks 5 5.- A rockshaft 38, supported in suitable bearings upon the runnersin advance of the slides 35, is provided with rearwardly-extending arms 39,

- having slots 40, that engage the portion of the rock-shaft 33 lying between the runners. The rock-shaft 38 has an operating-lever 41, provided with a stop 42, engaging a suitablysupported segment-rack 43, whereby said lever may be retained at various adjustments. Another rock-shaft 44, supported in advance of the rock-shaft 38, has a lever 45, which is connected by a link 46 with an arm 47, extending radially from the barrow-carrying rock-shaft 33, which latter may thus be tilted for the purpose of adjusting the harrow-teeth to various positions. The hand-lever 45 is provided with a stop 48, adapted to engage a rack-segment 49, whereby said lever and the parts controlled thereby may be securely retained at various adjustments. By manipulating the hand-lever 41 the rock-shaft 33 may be raised to and secured at various elevations, the slides 35 constituting guides and supports for said rock-shaft.

Exteriorly upon the outer members 4 of the runners, near their rear ends and near their lower edges, are secured outwardly and upwardly diverging earth-engaging blades or cutters 50.

l/Vhenin operation the machine is propelled over the ground, the runner-frame straddles the row of plants that is to be operated upon and shields the young plants from injury by preventing stones or clogs from being thrown in the direction thereof. The earth-engaging blades 24 will top the beds and serve to eradicate weeds from the spaces between the rows of plants, the tendency of said blades being to throw the weeds toward the center of the spaces between the rows. These blades are followed by the barrow-teeth, whereby the earth is crushed, stirred, and pulverized, and

the barrow-teeth are followed by the blades 50, which operate comparatively deep in the ground and close to the plants, so as to thoroughly eradicate weeds and grass growing close to the plants.

The various earth-engaging members are capable of adjustment, as herein described, and the machine may be guided not only while in progress, but especially when it is necessary to turn at the ends of the rows by the caster-wheels near the front end of the machine.

The general construction of the improved machine is simple and light and at the same time strong and durable.

Having thus described the invention, what is claimed is- 1. In a cultivator, a frame including a pair of runners, each of said runners being composed of a plurality of members suitably connected and spaced apart.

2. In a cultivator, a frame including a pair of runners, each of said runners being composed of a plurality of members suitably connected and spaced apart; slides vertically movable between said runnermembers; and earthengaging elements carried by said slides.

3. A cultivator-frame including a pair of runners each composed of a plurality of members suitably connected and spaced apart; and arches connecting said runners.

4. A cultivator-frame including a pair of runners, each of said runners being composed of a plurality of members suitably connected andspaced apart; arches connecting said runners; and rotary supporting means journaled between the members of the runners and having threads extending below the lower edges of the latter.

5. A cultivator-frame including a pair of runners provided with recesses in their under sides near their front ends; spindles journaled vertically in said runners and having bifurcated lower ends; wheelsjournaled in the forks of the spindles and accommodated in the recesses of the runners; and means for effecting simultaneous adjustment of the wheel-carrying spindles to guide the machine.

6. A cultivator-frame having runners each composed of a plurality of members suitably connected and spaced apart by interposed blocks, the outer runner members being provided with slots; in combination with slides vertically movable between the runner members, and earth-engaging blades connected with the slides and extending through the slots in the outer runner members.

7 A cultivator-frame having runners each composed of a plurality of members suitably connected and spaced apart by interposed blocks, the outer runner members being provided with slots; in combination with slides vertically movable between the runner members, earth-engaging blades connected with said slides and diverging rearwardly and downwardly through the slots in the outer runner members, and means for effecting vertical adjustment of the slides and for retaining said slides at various adjustments.

8. A cultivator-frame having runners each composed of a plurality of members suitably connected and spaced apart by interposed blocks, slides guided for vertical movement between the runner members i and spacingblocks, a rock-shaftsupported upon said slides and havingextended ends forming tooth-carrying heads, slotted arms engaging the rockshaft, a secondary rock-shaft supporting said arms, and means for operating said secondary rock-shaft and forreta'ning it at various adjustments.

9. A cultivator-frame having compound runners, slides guided between the component members of said runners, a tooth-carrying rock-shaft supportedupon said slides, means. engaging sald rock-shaft to effect vertical adjustment of said shaft and its supporting Y slides, and means for oscillating the tooth-carrying rock-shaft.

10. A cultivator-frame having runners each composed bra plurality of runners suitably connected and spaced apart by interposed blocks, arches connecting said runners, slides supported, for vertical movement between the runner members and having downwardly and rearwardly diverging blades extending,

through slots in the outer runner members, a

rock-shaft supported for oscillation and for movement in a. vertical plane and having ex-v GEORGE ERWYN (JONKLIN. Witnesses: J. ROY SMITH, R. M. SEIBEL. 

